Sash lock and fastener.



No. 684,017. j'

s. a. wELLmAN.

SASH LUBK. AND FASTENER.

(Applinaizion tiled Jan. 9, 19011) [Nl/ENTOR Sallul flolrney Patented (1ct. 8, |90I.

-IW/ TNESSES.

UNITED STATES PATENT OFFICE.

SAMUEL G. XVELLMAN, OF CORRY, PENNSYLVANIA.

SASH LOCK AND FASTENER.

SPECIFICATION forming part of Letters Patent No. 684,017, dated October 8, 1901.

Application led January 9, 1901. Serial No. 42,664. (No model.)

.T0 all whom, it may concern- Be it known that I, SAMUEL G. WELLMAN, a citizen of the United States, residing at Corry, in the county of Erie, State of Penn- Sylvania, have invented certain new and useful Improvements in Sash Looks and Fasteners, of which the following is a specification,

reference being had therein to the accom-v panying drawings.

This invention relates to a window-sash fastener and lock combined; and it has for its object the provision of such a device which is of a minimum cost ofY manufacture, capable of being made of cast parts requiring no machine-work to complete them and forming when assembled a compact structure, with the least possible danger of disarrangement, and of such strength as -to withstand the heavy sudden shocks to which such devices are in use subjected and capable to constitute a self-locking device at all times and in all positions of the sash to which it is applied, whether it be partly raised for ventilation or wholly raised or closed.

Other advantages will appear in the following description, and the novel features of the invention will be particularly pointed out in the claims.

In the drawings, Figure l is a horizontal section showing the fastener applied to a window sash and casing in position for use. Fig. 2 is a View in elevation with the top of the housing removed and the shaft of the operating-knob in cross-section. Fig. 3 is a front elevation of a portion of a window with the invention in position. Fig. 4 is a perspective of the case and is inclosed part detached. Fig. 5 is a sectional detail of a modified form of the bolt-operating device, and Fig. 6 shows a bottom view of this latter form.

Like letters of reference indicate like parts throughout the several views. v

Referring now to the details of the drawings by letter, A designates a window-frame,

and B a sash of known construction.

C is a rack, which may be of any length, adapted to be secured to the frame of the window in any suitable manner. It will be observed upon reference to Fig. 2 that the teeth c of this rack are not inclined or beveled, but that they have parallel sides which are straight and that the bolts or dogs which engage therewith have straight or flat faces a distance apart equal to three teeth of the rack-bar for engagement therewith, whereby an extended bearing is provided, and other advantages will hereinafter appear.

D is a casing adapted to be secured to the sash in any suitable manner-for example, by screws passing through openings d--and E are bolts adapted to slide therein and to project through suitable openings in the end wall of the same, as shown. These bolts have each one flat or straight face and a beveled or inclined face, as shown, the flat or straight face being designed to engage with the flat or straight faces of the teeth or notches in the rack, as seen clearly in Fig. 2, and the beveled faces being disposed toward each, otherto adapt the bolts to ride freely over the rackteeth in one direction only.

F are springs around the shanks of the bolts and serve to normally project the bolts so they will engage with the rack. These springs are confined against the inner wall of the housing and against shoulders E on the bolts, as seen. As seen in Figs. 2 and 4t, these bolts are designed to be actuated simultaneously by means of the rod or shaft F, which works througha slot d in the housing D, and this rod or shaft carries the rigidlyconnected cross-bar G, which is designed to engage pins or projections H on the faces of the bolts, as seen best in Fig. 2, so that when the rod or shaft is moved the said crossbar engaging the bolts will actuate them in opposition to the force of the springs, and thus the bolts or dogs will be withdrawn from their engagement with the rack, as will be readily understood. By this arrangement the bolts or dogs may be operated either together by reciprocating the shaft or one in one direction and the other in the other by turning the rod or shaft so that the cross-bar will be swung, and thus move the one bolt outward while the other is being moved inward by its spring. The rod or shaft F should terminate outwardly in a suitable knob or handle, as shown in Fig. l, by which it may be manipulated. In Figs. 5 and 6 the housing is not provided with a slot d', but merely with bearings cl2 for the shaft F, the opposite bearing being in a plated, which may or may not be provided. In eitherconstruction ofV los the housing that is, with the slot il or bearing Z2 and with or without the bottom plate cl3-the shaft F may be turned to operate the bolts individually, or in case the slot d' is formed in the housing the bolts may be withdrawn from the rack C simultaneously or in dividually in alternation, as desired. Vhen operated individually,the foremost bolt as the sash is either moved up or down will by reason of the inward disposition of the beveled faces automatically be quickly forced by its spring inwardly between the teeth of the rack-bar, and this is done before the rearmost bolt has left the face of an adjacent tooth, because the straight faces of the bolts are separated a distance equal to three teeth of the rack. This construction insures a quick, positive, and iirm locking of the sash at any desired point.

In Figs. l and et there is shown a projection I on the case D, which projection is intended as a fixed finger-piece to facilitate the movement of the shaft F in the slot d'; but this feature is not essential tothe novelty or usefulness of the invention, and therefore may be discarded.

Various modifications and changes in detail of proportions of the various parts may be made without a departure from the spirit of the invention.

Vhat I claim isl. In a device of the class described the combination with a rack-bar having square teeth, of a pair of bolts having each an outer straight face and an inner beveled face and spaced a distance equal to three teeth of said rack-bar means for moving said bolts simultaneously and positively in one direction and springs acting upon said bolts to move them in an opposite direction, substantially as specified.

2. A device of the class described, comprising a casing, a pair of bolts therein each having a beveled face, and means for retraeting said bolts simultaneously or independently retracting either bolt and projecting the other; substantially as specilied.

3. In a device of the class described the combination, of a square-tooth rack-bar, a

pair of bolts spaced one tooth apart and ben Veled at opposing` faces, means for movingsaid bolts jointly out of mesh with said bar and means for automatically throwing one of said bolts into mesh with said rack-bar, substantially as specified.

4. The combination with a rack-bar having` a series of teeth, of sliding bolts having projections thereon, means for projecting said bolts, a slidingly-mounted rotatable shaft, a bar carried thereby engaging said projections, and a suitable housing' for all of said parts slotted to permit movement of said shaft; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL G. WELLMAN.

Vitriesses:

ALFRED T. GAGE, E, J. BEvERsTooK. 

